Note 7 - Basic And Diluted Earnings Per Share (Details) - Basic And Diluted Earnings Per Share (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings per share
Net income	$ 3,343	$ 2,404	$ 6,206	$ 4,821
Preferred dividends and accretion of discount	266	420	481	840
Income available to common shareholders	3,077	1,984	5,725	3,981
Weighted average common shares outstanding (in Shares)	8,064	7,928	8,033	7,912
Add dilutive effect of assumed exercises of options	$ 55	$ 67	$ 52	$ 15
Basic Earnings per Share (in Dollars per share)	$ 0.38	$ 0.25	$ 0.71	$ 0.50
Weighted average common and dilutive potential common shares outstanding (000) (in Shares)	8,119	7,995	8,085	7,927
Diluted Earnings per Share (in Dollars per share)	$ 0.38	$ 0.25	$ 0.71	$ 0.50